Equity Incentive Plans - Summary of Total Stock-based Compensation Expense Recorded Related to Share-based Payment Awards (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Total stock-based compensation	$ 177	$ 54	$ 277	$ 108
Research and Development Expense [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Total stock-based compensation	59	23	102	45
Selling and Marketing Expense [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Total stock-based compensation	15	1	22	1
General and Administrative Expense [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Total stock-based compensation	$ 103	$ 30	$ 153	$ 62

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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+ Details